Multiple posts

Hey,

I have made this page https://www.ramobiler.dk , and everything is working fine so far, but in the car page (Biler), the car posts are showing twice. Biler page refers to a plugin called Car Listing, but I dunno which part to edit to stop the multiple pages. All though the content itself isn’t duplicated, only the links showing to each car is showing two or three times.

<?php
/*
 Info for WordPress:
 ==============================================================================
 Plugin Name: Car Listing
 Description: Car Listing project
 Version: 0.1
 Author: Fedmich
 Author URI: https://fedmich.com/works/
*/

?>
<?php
// Add Shortcode
function car_listing() {
	//	Year Color Mileage Price
	define('CAR_LISTING_PLUGPATH', get_option('siteurl').'/wp-content/plugins/'.plugin_basename(dirname(__FILE__)).'/');

	$search = empty( $_GET['search'] ) ? '' : $_GET['search'];
	?>
	<link href="<?php
		echo plugins_url( 'fedmich-car-listing.css', __FILE__ );
	?>" rel="stylesheet" type="text/css" media="all" />
	<script type="text/javascript" src="<?php
		echo plugins_url( 'fedmich-car-listing.js?v2', __FILE__ );
	?>"></script>
	<?php
		$no_photo = plugins_url( 'no_photo.png', __FILE__ );
	?>
	<div class="fedmich_car_listing grid">
		<div class="listing_navigation">
			<div class="listing_sort">
				Sort:
				<a href="<?=url_current_set('sort','car_make');?>">M?rke</a>
				<a href="<?=url_current_set('sort','car_year');?>">?r</a>
				<a href="<?=url_current_set('sort','car_color');?>">Farve</a>
				<a href="<?=url_current_set('sort','car_mileage');?>">Kilometer</a>
				<a href="<?=url_current_set('sort','car_price');?>">Pris</a>
			</div>
			<div class="listing_search listing_right">
				<?php
					$url_page_form = '//' . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"];
					if( strstr($url_page_form, '?') ){
						$url_parsed = parse_url($url_page_form);
						$url_page_form = $url_parsed['path'];
					}

				?>
				<div class="listing_searchbox">
					<form name="" action="<?=$url_page_form;?>">
						<input type="text" id="search" name="search" value="<?=$search;?>" placeholder="Search..." required />
					</form>
				</div>
				<div class="listing_modes">
					<a href="#" rel="grid" id="mode_grid" class="active_mode">GRID</a>
					<a href="#" rel="list" id="mode_list">List</a>
				</div>
			</div>
			<div class="clear"></div>
		</div>
		<div class="clear"></div>

		<div class="listing_posts">
	<?php
		$post_limits = 50;
		global $wpdb;

		/*
		$query = "posts_per_page=$post_limits";
		if( $search ){
			$query .= "&s=" . urldecode( $search );
		}
		*/

		$meta_key = empty( $_GET['sort'] ) ? '' : $_GET['sort'];
		if(! empty($meta_key) ){
			//$query .= "&meta_key=$meta_key&orderby=meta_value_number&order=ASC";
			//$query .= "&meta_key=$meta_key";
		}

		if( $meta_key ){
			$sq_metakey = " AND ( $wpdb->postmeta.meta_key = '$meta_key' OR $wpdb->postmeta.meta_key IS NULL ) ";
		} else {
			$sq_metakey = '';
		}

		if( $search ){
			$sq_search = " AND $wpdb->posts.post_title like '%$search%' ";
		} else {
			$sq_search = '';
		}

		$sql = "
		SELECT * FROM $wpdb->posts
		LEFT JOIN $wpdb->postmeta ON($wpdb->posts.ID = $wpdb->postmeta.post_id)
		LEFT JOIN $wpdb->term_relationships ON($wpdb->posts.ID = $wpdb->term_relationships.object_id)
		LEFT JOIN $wpdb->term_taxonomy ON($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id)
		WHERE $wpdb->posts.post_type = 'post'
		-- $wpdb->term_taxonomy.taxonomy = 'category'
		-- AND $wpdb->term_taxonomy.term_id = 13
		AND $wpdb->posts.post_status = 'publish'

		$sq_metakey
		$sq_search

		ORDER BY
		ISNULL( $wpdb->postmeta.meta_value   )
		, $wpdb->postmeta.meta_value

		limit 50
		";

		$pageposts = $wpdb->get_results( $sql, OBJECT);
		//var_dump($meta_key);
		//query_posts( $query );
		global $post;
	?>
	 <?php if (! $pageposts){ ?>
 	<div class="listing_none">
		No cars found based on your Sort/Search...
	</div>
	 <?php } else { ?>
		<ul>
	  <?php foreach ($pageposts as $post){ ?>
		<?php setup_postdata($post); ?>

		<li class="">

			<div class="car_thumbnail">
			<?php
			if ( has_post_thumbnail() ) {
            	?>
            	<a href="<?php echo the_permalink(); ?>"><?php
				the_post_thumbnail(array(200,150));
				?></a><?
        	}
			else{
				?>
				<a href="<?php echo the_permalink(); ?>"><img src="<?=$no_photo;?>" alt="" /></a>
				<?php
			}
			?>
			</div>
			<div class="listing_fields">
				<?=fed_get_custom('car_make', 'M?rke');?>
				<?=fed_get_custom('car_year', '?r');?>
				<?=fed_get_custom('car_color', 'Farve');?>
				<?=fed_get_custom('car_mileage', 'Kilometer');?>
				<?=fed_get_custom('car_price', 'Pris');?>
			</div>
			<div class="clear"></div>
			<h2 class="post_title"><a href="<?php echo the_permalink(); ?>"><?php echo get_the_title();?></a></h2>
			</li>
			<?php
		}
		?>
		</ul>
		<?php
		}

		wp_reset_query();
	?>

		<div class="clear"></div>
		</div>
		<div class="clear"></div>
	</div>
	<?php
	// Code
	return '';
}

function fed_get_custom( $fld , $fld2 ){
	static $custom_fields;
	if(empty($custom_fields)){
		$custom_fields = get_post_custom();
	}
	$val = get_post_custom_values( $fld );
	if(! empty( $val )){
		?>
		<div class="val">
			<?=$fld2;?>: <?=$val[0];?>
		</div>
		<?php
	 }
}

function url_current_set( $param, $value){
	static $url_current;
	if(empty($url_current)){
		$url_current = '//' . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"];
	}

	if( strstr($url_current, '?') ){
		$url_parsed = parse_url($url_current);

		$found = false;
		$segments = explode('?', $url_current );
		$parts = explode('&', $segments[1] );
		foreach ( $parts as $ctr => $part){
			$vals = explode('=', $part );
			if( $vals[0]==$param ){
				$parts[$ctr] = "$param=$value";
				$found = true;
			}
		}
		if( $found ){
			$segments[1] = implode('&', $parts );
			$url_page = implode('?', $segments);
		}
		else{
			$url_page = $url_current . "&$param=$value";
		}
	}
	else{
		$url_page = $url_current . "?$param=$value";
	}
	return $url_page;
}

add_shortcode( 'CAR_LISTING', 'car_listing' );